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High flow metal cat
Posted: Sat Feb 23, 2008 1:31 pm
by stevesports
Hey guys, did a search around this section and can't see this question being answered.
Does the NB8B benefit from having a high flow metal cat compared to stock?
if so, to what extent?
cheers.
Posted: Sat Feb 23, 2008 3:58 pm
by Matty
Probably not. Depends what else has been done to the car, but on a relatively stock one, probably bugger all difference
Posted: Sat Feb 23, 2008 4:18 pm
by AB7
Unless you car is hi-powered turbo, then its not worth it. Just get hi flow cat, its around $120 rather then paying $300+ for Metal Cat.
Posted: Sun Feb 24, 2008 12:40 am
by Sheck
I would say yes, if you belive an exhaust will give you more power (noticible) then you should replace the most restrictive part with a high flow item.
Get an x-force metal cat they are failry cheap, about the same price as what an exhaust shop will charge for a new stock cat..
Posted: Sun Feb 24, 2008 11:34 am
by stevesports
hmm, where can i get a hi-flow cat for $120/
Posted: Sun Feb 24, 2008 2:57 pm
by Sheck
I got mine from
www.importautoparts.com.au not sure of exact price but its not too expensive. Alot of the shope i looked in charged more than 120 for a normal cat too.
Posted: Sun Feb 24, 2008 7:15 pm
by Steampunk
there's \"hi-flow\" cats and there's \"high-flow' cats.
If you want a proper one, trawl around various forums, ask reliable people and trusted shops, cause there are only a handful of catalytic convertors that are truly high-flow, or should I say more appropriately, less-restrictive.
As for power, the concensus is that a good complete system should produce more power, but the tangibility is in that the engine revs quicker and freer.
Re:
Posted: Sun Feb 24, 2008 7:29 pm
by AB7
stevesports wrote:hmm, where can i get a hi-flow cat for $120/
I got it off ebay last time, its brand new too
Posted: Sun Feb 24, 2008 7:38 pm
by stevesports
Hmmm, well i guess the next question regards the legality of a high-flowing metal cat converter.
Posted: Mon Feb 25, 2008 4:41 pm
by Matty
might as well just get an old commodore one from a wrecker. Good for ~150kW easy, cost bugger all.
Re:
Posted: Wed Feb 27, 2008 3:12 pm
by sliq
[quote="1red5"]there's "hi-flow" cats and there's "high-flow' cats.quote]
what's the difference between "hi" and "high" ?
how many kw's will you be looking to gain from a custom catalyzer? from the sounds of things, it's not worth spending $400 or so for a metal cat
Re:
Posted: Wed Feb 27, 2008 4:40 pm
by Steampunk
sliq wrote:1red5 wrote:there's "hi-flow" cats and there's "high-flow' cats.quote]
what's the difference between "hi" and "high" ?
spelling
What I am getting at is every man-and-his-dog will try and flog off so called "high-flow" cats, but not many genuinely flow faster, ie less restrictive, than OEM.